There is a plethora of interest and concern regarding the need and consumer's interest in Sustainable Housing. Currently new Commercial buildings are required to obtain certain standards of green through a highly mandated and very expensive process. Mandates that cost money raise taxes and ultimately the money is spent frying another hamburger all together. The Home Builders have a better plan for Residential Building; I know the plan from first-hand experience. This rating system for building green works well for residential homes.  You can access this system and register a house in minutes. The system holds your hand and walks you through the process of green options. Finally it tallies up your "Greenness" and certifies your house. Just go to the following link. http://www.nahbrc.org/technical/standards/greenbuilding. You can test it out for yourself. Lets allow consumers a fair choice. Mandates are costly and consumers have already begun to drive the Residential Green Builidng Market.